12-4b=-20

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Solution for 12-4b=-20 equation: 


Simplifying
12 + -4b = -20

Solving
12 + -4b = -20

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-12' to each side of the equation.
12 + -12 + -4b = -20 + -12

Combine like terms: 12 + -12 = 0
0 + -4b = -20 + -12
-4b = -20 + -12

Combine like terms: -20 + -12 = -32
-4b = -32

Divide each side by '-4'.
b = 8

Simplifying
b = 8

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